Current Production
Prospex
SEIKO SRPE37
MSRP
$625 USD
Verified Aug 18, 2026
Case diameter44 mm
Lug-to-lug48.7 mm
Thickness12.81 mm
Case materialStainless steel
CrystalSapphire crystal with anti-reflective coating on the inner surface
Water resistance200 m
MovementAutomatic, Caliber 4R35, 21,600 vibrations per hour, 23 jewels, Power reserve: approximately 41 hours
Calibre4R35
Power reserve41 hours
DialWhite
Bracelet or strapBlack silicone strap
Specifications as published by Seiko →
Last verified Aug 18, 2026